Mechanism for driving dynamos on railway-trucks.



No. 740.,98 2.- PATENTED OCT. 6, 1903.

P. KENNEDY.

MECHANISM FOR DRIVING DYNAMOS ON RAILWAY TRUCKS.

APPLICATION FILED JUNE 5. 1903.

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No. 740,982. Patented October e, 1903,

UNiTsD STATES PATENT ()FFIQE,

PATRICK KENNEDY, OF NEW YORK, Y., ASSIGNOR TO CONSOLIDATED RAILWAY ELECTRIC LIGHTING AND EQUIPMENT COMPANY, A CORPO- RATION OF NEW JERSEY.

MECHANISM FOR DRIVING DYNAMOS ON RAILWAY-TRUCKS.

SPECIFICATION forming part of Letters Patent No. 740,982, dated October 6, 1903.

Application filed June 5, 1903. Serial No. 160,168. (No modelJ To all whom it may concern: a material reduction in the transmission of Be it known that I, PATRICK KENNEDY, power. mechanical engineer, a citizen of the United The object of my invention is to obviate States, and a resident of the borough of Brookthese practical difficulties in the transmission lyn, in the city of New York, in the State of of power from car-axlesto dynamos. To this 55 New York, have invented certain new and end I provide certain new and useful'combiusefullmprovemen ts in Mechanisms for Drivnations of instru mentalities,hereinafter fully ing Dynamos on Railway-Trucks; and I do set forth, whereby I am enabled to place the .hereby declare that the following is a full, dynamo outside of the cross-beams of the IO clear,.and exact description of the same, reftruck, and thereby secure the transmission of 6c erence being had to the accompanying drawpower thereto through a driving-belt of inings, making a part of this specification, in creased length, whereby the apparatus is whichmade readily accessible for examination, lu-

Figure l is a vertical longitudinal view of brication, 850., whereby it may be readily re- [5 an apparatus made according to my invenmoved from the truck when required, and 6 tion. Fig. 2 is a plan View of the same. Fig. whereby it is provided and held in place upon 3 is a vertical longitudinal sectional view the truck with great stability andsecurity, showing a modified construction of one of the these advantages resulting in a much greater parts of said apparatus I degree of safety, durability, and'economy in Thisinvention relatest-o the useof dynamos working than has heretofore been attained 7o driven from car-axles. Heretofore it has been in the class of mechanisms to which my inthe practice to locate the dynamo inside of vention relates. the cross-beams of the bogie-truck or, as an A A are portions of the longitudinal beams alternative, to suspend it from the car-body. which form part of the horizontal wooden Each of these has demerits which greatly framework of a railway-truck, whereof two 75 impair its utility in practice. For example, of the cross-beams are shown at B B, while when the dynamo-is placed upon the truck in- C is one-of the axles of the truck. This latside of the cross-beams thereof the driving-pulter may be of any suitable or approved conley on the axle is necessarily brought closely struction. The invention is, however, more adjacent to the pulley on the armature of the especially designed for use in connection with 8: dynamo. This necessitates in its turn a Very various types of standard railway trucks, shortbelt fromtheone pulleyto theother,with which being well known in the art require great liability to derangement of the belt and no description here, imperfect oruncertain transmission of power. D is a bracket-frame, which is made, pref- 5 Further, such an arrangement of the parts era'bly, of iron or steel and the office of 8 makes them difiicult of access for inspection, which is to support the dynamo and its imrepairs, removal, or replacement, and as the mediate adjuncts, its outermost end portion dynamo and its accessories are'bolted direct overhanging outside of the adjacent crossto the timbers of the truck their Weight is beam and forming a firm and strong bracket 40 caused to fall u pon bolts, which are frequently device. This bracket-frame is preferably ingo inadequate to their permanent support under tegral throughout. It comprises two longithe severe usage to which railway-trucks are tudinal side parts a a, which are connected necessarily subjected when in use. When by a cross part b. The parts a are parallel the dynamo is suspended from the car-body, with the longitudinal beams A A. They are the shaft of the armature of the dynamo is placed over and rest upon the outermost 5 in the turning of curves brought to more or cross-beam B, thence inward underneath anless of an angle to the axle on which the drivother of the said cross-beams, as shown at c c ing-pulley is placed, in which case there is in Fig. 1. It will be seen that by this disposigreat danger of throwing the belt from the tion of the side parts a a-they are enabled to pulleys and, in any event for the time being, support weight provided upon the overhang- 1o ing ends a a of the said side parts or upon the cross part b. To secure the bracketframe against displacement, the side parts are bolted to lateral surfaces of the longitudinal beams A A, as shown at d din Fig. 2, while their opposite ends, adjacent to the cross part b, are connected by braces E to the outwardly-projecting end portions of the adjacent beam 13.

Placed in a space between the cross part b of the bracket-frame D and the beam 13, which is adjacent theretoin other words, the adjacent'end piece of the truck'is a pendent cradle E. At the top of its outer side this cradle has horizontal lugs e, which are outside of and rest upon the cross part b of the bracket-frame, and at the top of its inner side has similar lugsf, which are outside of and rest upon the adjacent beam B, as shown in Fig. 2, the cradle being thus suspended from said cross part b and adjacent beam B. To prevent the displacement of the cradle, the lugs f are bolted to the beam by threaded bolts 9 and nuts h. It will be noticed that by removing the nuts h the box maybe readily manipulated to bring the lugs e and f away from their bearings, whereupon the cradle may be readily dropped from its place and removed when required. In the bottom of the cradle is an adjustable block F, which is held in place by bolts 1' and nuts the bolts t' extending up through slots provided in the block, as shown in dotted outline in Fig. 2. At each end of the block F is a nut 70, in which works a set-screw Z, as shown in Fig. 1, so that by turning and adjusting the set-screws to change their available length the block may be moved to or fro in the eradle and confined in the desired position by tightening the set-screws against its ends.

Within the cradle is the dynamo G, the bottom of which has a projectiug'bearing K, which is fitted to a corresponding bearing m, provided to the block F. A pivot n connects the said two bearings, so that the dynamo is pivotally supported upon the block and capable of more or less oscillating movement thereon. By thus making the pivot of the dynamo adjustable the latter may be placed in whatever position it may best cooperate with the pulley on the armature-shaft to keep the driving-belt at the proper tension without too much inclining the box from the vertical. The dynamo G is so arranged that its armature-shaft, as shown in dotted outline at 't', is extended from one end of the dynamo far enough to receive the armature pulley K, which is made fastthereon. Fast upon the axle C is the driving-pulley M. From the latter to the armature-pulley K extends the drivingbelt M, as shown in Fig. 2 and in dotted outline in Fig. 1. Suitablypivoted to the cradle as, for example, at ris a rod N, which, as shown in Fig. l, is horizontal and is extended outward, with a head 8 at its outer end. This head is preferably a loaded nut screwed upon the rod N. Between this head 3 and the cross part b of the bracket-frame is a spring P, which is preferably a spiral compression.- spring. This spring acting through the rod N tends to elastically pull the dynamo outwardin other words, to elastically swing or press the dynamoin opposition to the tension of the driving-belt to control the degree of the said tension.

In Fig. 3 is shown a modification of the construction just hereinbefore described. In

Fig. 3 the dynamo G has at its lower part a horizontal lever-bar M, which extends outward. Fast upon the upper part of the cradle is a fixed arm R, to which is pivoted the vertical rod S. This rod is threaded to receive a nut to, which constitutes an adjustable stop. Around this rod, between the stop to and the lever-bar u, is the compression-spring P, which by its action upon the lever-bar tends to swing the dynamo outward in the same manner as hereinbefore described. This elastic outward movement of the dynamo to the extent permitted by the driving-belt M serves to keep the latter taut during the vicissitudes of use. The degree of tension thus brought to bear upon the belt may be adjusted to any desired degree by compressing the spiral spring. Thisis done by adjusting the head on the rod N or by adjusting the nut or stop to when the draft is applied by the means shown in Fig. 4.

It will be seen that by the novel combinations of parts herein described the dynamo may be located at any desired distance from the driving-axle of the truck, thereby insuring the advantages of a longer driving-belt, this permitting the use of larger pulleys, whether on the axle or on the armature-shaft, also that the dynamo and its adjuncts may be readily reached and inspected, also that the dynamo and its adjuncts maybe easily removed and replaced, as occasion demands, also that aside from the driving-pulley on the axle the apparatus may be readily detached from the truck by removing the bolts which attach the bracket-frame to the beams, and that when in use the tension of the drivingbelt in its hold upon the armature-pulley is made constant and held at any desired strain by adjusting the compression of the spring which actuates the dynamo.

WVhat I claim as my invention is 1. The combination with a car-truck and a bracket device extended outside of the beams of said truck, of a removable cradle placed between said bracket and an outside crossbeam of the trnck,a dynamo within the cradle and adjustably pivoted thereto, a pulley on the armature-shaft of the dynamo, a drivingpulley on an axle of the truck, a driving-belt extended from the driving-pulley to the pulley on the armature-shaft,and means for elastically swinging the dynamo to maintain the tension of the belt, as described.

2. The combination witha car-truck and a bracket extended outside of the beams of said truck, of a removable cradle placed between said bracket and an outside cross-beam of the truck, a dynamo within the cradle adjustably pivoted at the bottom thereof, a pulley fast on the armature of the dynamo, a driving-pulley on the axle of the trnck, a driv-' posite sides of its top to rest upon the bracket and the adjacent cross-beam to suspend the cradle in the space between them, and a dynamo pivotally supported at its bottom within the cradle, of a pulley on the armature-shaft of the dynamo, a driving-pulley on an axle of the truck, a driving-belt extended from the driving-pulley to the pulley on the armature-shaft, a compression-spring for swinging the dynamo against the tension of the belt to control said tension, and means for adjusting the compression of the spring, as described.

4. The combination with a cartruck, a bracket extended outside of the beams of said truck, a cradle supported by said bracket between the same and an outer cross-beam of the truck, a dynamo in the cradle, a pivotal bearing at the bottom of the box, a block placed at the bottom of the cradle and provided with a pivotal bearing which codperates with that of the dynamo, means for adjusting the block upon the bottom of the cradle, a driving-pulley on an axle of the truck, a pulley on the armature-shaft of the dynamo, a

driving belt extended from the driving-pulley to the pulley on the armature-shaft,and means for elastically swinging the dynamo to maintain the tension of the belt, as described.

5. The combination with a cartruck, a bracket extended outside of the beams of the truck, a cradle supported in said bracket out side of an outer cross-beam, a dynamo in said cradle provided at its bottom with a pivotal bearing, a slotted block placed in the bottom of the cradle and having a pivotal hearing which cotiperates with that of the dynamo, and bolts passed through the bottom of the cradle and through the slots of the block, of a pulley on the armature-shaft of the dynamo, a driving-pulley on an axle of the truck, a driving-belt extended from the driving-pulley to the pulley on the armature-shaft, and means for elastically swinging the dynamo to maintain the tension of the driving-belt, as described.

6. The combination with a railway-truck, a bracket-lira me which comprises two side parts that extend along longitudinal beams of the truck and over one transverse beam and un-.

der another, and which are united at their ends by a suitable cross part, of a cradle suspended from the said bracket-frame between its cross part and an adjacent cross-beam, a dynamo carried by the-cradle, a pulley fast on the armature-shaft of the dynamo, a drivlug-pulley fast on an axle of the truck, and a driving-belt extended from the driving-pulley to the pulley 0n the armature-shaft, as

.. described.

7. The combination with a car-truck anda bracket-frame the cross part of which is outside of an outside cross-beam of the truck, and the side parts of which are passed over said cross-beam and under another and made fast to longitudinal beams of the truck, of a removable cradle having lugs at its top whereby it is suspended from the cross part of the bracket-frame and the adjacent cross-beam of the truck, a dynamo pivoted at the bottom within the cradle, a pulley on the armatureshaft of the dynamo, a driving-pulley on an axle of the truck, a driving-belt extended from the driving-pulley to the pulley on the armature-shaft, a spring for operating the dynamo to maintain the tension of the drivingbelt, and meansfor adjusting the spring to adjust said tension, as described.

8. The combination with a car-truck, a bracket device extended outside of the beams of the truck, a cradle supported in said bracket outside of an outer cross-beam, a dynamo in said cradle provided at its bottom with a pivotal bearing, a slotted block placed in the bottom of the cradle and having a pivotal bearing which codperates with that of the dynamo, bolts passed through the bottom of the cradle and through the slots of the block, and adjusting set-screws provided at the ends of the block to brace the same in positions to which it may be adjusted along the bottom of the cradle, a pulley on the armature-shaft of the dynamo, a driving-pulley on an axle of the truck, a driving-belt extended from the driving-pulley to the pulley on the armature-shaft, and means for elastically swinging the dynamo to maintain the tension of the belt, as described.

9. The combination with a car-truck, of a bracket device extended outside the beams of the truck, a cradle supported in said bracket device outside of an outer cross-beam, a dynamo in said cradle provided at its bottom with a pivotal bearing, a slotted block placed in the bottom of the cradle and having apivotal bearing which cooperates with that of the dynamo, bolts passed throughthe bottom of the box, and through the slots of the block to hold the latter to the bottom of the cradle, and adjusting set-screws provided at the ends of the block to brace the same in positions to which it may be adjusted along the bottom of the cradle, a driving-pulley on an axle of the truck, a pulley on the armature-shaft of the dynamo, a driving-belt extended from the driving-pulley to the pulley of the armatureshaft, a compression-spring arranged to operate the dynamo to maintain the tension of the driving-belt, and means for adjusting the compression of said spring to correspondingly adjust the tension of the belt, as described.

10. The combination with'a car-truck and too a bracket-frame which comprises side parts I means for securing the said side parts to 1011- that are passed over an outside cross-beam of gitudinai beams of the truck, as described.

the truck and under another of such crossbeams and a cross part which is outside of PATRICK KENNEDY 5 said outer cross-beam, of braces which con- Witnesses:

neot the outermost portions of the side parts JAMES A. WHITNEY,

with the adjacent outermost cross-beam, and AMAZIAH WHITNEY. 

